package com.xiaohuang.dao;

import com.xiaohuang.pojo.Department;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
@Repository
//部门dao
public class DepartmentDao {
    //模拟数据库中的数据
    private static Map<Integer, Department> departments = null;
    static {
        departments = new HashMap<Integer, Department>(); //创建部门表
        departments.put(101,new Department(101,"教学部"));
        departments.put(102,new Department(102,"市场部"));
        departments.put(103,new Department(103,"教研部"));
        departments.put(104,new Department(104,"运营部"));
        departments.put(105,new Department(105,"后勤部"));
    }

    //获取所有部门信息
    public Collection<Department> getDepartments() {
        return departments.values(); //返回部门表中的所有值
    }
    //通过id得到部门
    public Department getDepartmentById(Integer id) {
        return departments.get(id); //返回部门表中的id
    }
}

